Code of Federal Regulations > Title 40 > Chapter I > Part 1039 > Subpart C - Subpart C—Certifying Engine Families

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

§ 1039.201 - What are the general requirements for obtaining a certificate of conformity?

§ 1039.205 - What must I include in my application?

§ 1039.210 - May I get preliminary approval before I complete my application?

§ 1039.220 - How do I amend my maintenance instructions?

§ 1039.225 - How do I amend my application for certification?

§ 1039.230 - How do I select engine families?

§ 1039.235 - What testing requirements apply for certification?

§ 1039.240 - How do I demonstrate that my engine family complies with exhaust emission standards?

§ 1039.245 - How do I determine deterioration factors from exhaust durability testing?

§ 1039.250 - What records must I keep and what reports must I send to EPA?

§ 1039.255 - What decisions may EPA make regarding a certificate of conformity?